Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-12-20
1995-08-29
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 65, 128DIG13, A61M 500
Patent
active
054456223
ABSTRACT:
An intravenous system for monitoring the flow of IV fluids to a patient is embodied in a wristwatch sized unit for placement on the patient. The device includes a flow indicator switch capable of detecting when flow starts or stops. In one embodiment, the range of flow rates which may trigger a signal is increased using a plurality of sensor elements. The flow indicator switch uses a conical chamber with a movable flow element which reacts to the motion of the IV fluid. A light emitter-sensor arrangement provides a means for converting physical displacement into an electrical signal indicating displacement of the movable member.
REFERENCES:
patent: 4976687 (1990-12-01), Martin
patent: 5356378 (1994-10-01), Doan
patent: 5376070 (1994-12-01), Purvis et al.
patent: 5395320 (1995-03-01), Padda et al.
Scott Gene
Yasko John D.
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